lock_fd = os.open(os.path.join(cnf["Dir::Lock"], 'dinstall.lock'), os.O_RDWR | os.O_CREAT)
try:
fcntl.lockf(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
lock_fd = os.open(os.path.join(cnf["Dir::Lock"], 'dinstall.lock'), os.O_RDWR | os.O_CREAT)
try:
fcntl.lockf(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)